LLS2W391MELB

The LLS2W391MELB is a snap-in terminal aluminum electrolytic capacitor rated for 450 V and 390 µF capacitance. Designed as a radial, can-type snap-in component, it targets general-purpose high-voltage power applications where reliable bulk capacitance and sustained ripple performance are required.

Key value propositions include high-voltage handling (450 V), robust ripple-current capability across low and high frequencies, and an endurance rating of 3000 hours at 85°C—delivering stable capacitance and controlled dissipation for demanding power circuits.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a rated voltage of 450 V and ±20% tolerance at 20°C, 120 Hz.
• Electrical Loss — Tangent of loss angle (tanδ) of 0.2 measured at 20°C and 120 Hz, supporting predictable dissipation characteristics.
• Ripple Current Performance — High ripple-current capability: 2.35 A at 120 Hz (low frequency) and 3.361 A at 50 kHz (high frequency), enabling effective smoothing under AC ripple loads.
• Leakage Current — Specified leakage current of 1250 µA after rated voltage application at 20°C.
• Endurance & Reliability — Endurance rated for 3000 hours at 85°C with the specified DC bias plus rated ripple current; capacitance and leakage remain within specified limits after endurance testing.
• Package & Mounting — Radial, snap-in can package (φ30 × 45 mm) for secure mounting in power assemblies; supplied in tray packing for production handling.
• Operating Temperature Range — Specified for operation from −25°C to +85°C.
• Compliance — RoHS compliant.

Typical Applications

• High-voltage power supplies — Bulk smoothing and energy storage in 450 V class power supplies where high voltage and sustained ripple capability are required.
• Industrial power electronics — DC-link and filtering use in industrial converters and inverters that demand robust ripple handling and long endurance at elevated temperatures.
• General-purpose power filtering — Bulk capacitance for smoothing and decoupling in general-purpose high-voltage circuits and assemblies.

Unique Advantages

• 450 V rating for high-voltage designs: Supports designs that require elevated DC voltage handling without series stacking.
• High ripple-current capability: 2.35 A at 120 Hz and 3.361 A at 50 kHz reduce internal heating under ripple conditions and improve performance in AC-coupled power stages.
• Proven endurance: 3000 hours at 85°C under rated ripple ensures stable capacitance and controlled tanδ over extended operation.
• Snap-in radial package: Robust mechanical mounting suitable for production assemblies, supplied in tray packing for volume manufacturing.
• Predictable electrical loss: tanδ = 0.2 at 20°C/120 Hz for consistent dissipation planning in thermal designs.
• Regulatory compliance: RoHS-compliant construction for modern supply-chain requirements.

Why Choose LLS2W391MELB?

LLS2W391MELB combines high-voltage capability with substantial bulk capacitance and proven ripple endurance, making it a practical choice for engineers building 450 V class power systems and industrial power electronics. Its snap-in radial can package and tray packing support production assembly workflows while the specified electrical characteristics—tanδ, leakage, and ripple current ratings—allow precise thermal and performance planning.

This capacitor is suited for designers seeking a reliable, RoHS-compliant electrolytic solution for general-purpose high-voltage filtering and energy storage applications where long-term endurance at 85°C is required.

Request a quote or submit an inquiry to receive pricing, availability, and ordering information for LLS2W391MELB. Our team can assist with lead times and volume pack options.